From: [email protected]
Date: Thu Nov 16 2000 - 18:23:49 PST
1. Can any of you tell me how to avoid AC power line transients pickups and
triggering by a scope for this wrong signal
during single a shot capturing some event which may appear after a long timegap.
For example, I see very
big transients(many volts for 1V/Div) when a table top tubelight is powerd up
and similar noise bursts from unknown source.
As such I am not able to observe the required event(a TTL signal) so far. I am
triggering for hi-lo transition.
My digital ground is connected to chasis. My system chasis and Scope chasis is
connected to AC Earth.
2. Also when I suddenly move in-out of the chair !.
3. With ref to Ferrite Beads: Can we use High freq chokes like small tubular
beads on a thick axial wire on VCC and GND
inlet of a card(ie other page/part of sch). Which may offer no resistance for
signal spectrum except for high freq noise spikes.I assume.
FORCE Computers India Pvt Ltd
**** To unsubscribe from si-list or si-list-digest: send e-mail to
[email protected] In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
This archive was generated by hypermail 2b29 : Tue May 08 2001 - 14:30:10 PDT